OPA2313 1-MHz, Micropower, Low-Noise, Rail-to-Rail I/O 1.8-V Operational Amplifier | TI.com


1-MHz, Micropower, Low-Noise, Rail-to-Rail I/O 1.8-V Operational Amplifier

1-MHz, Micropower, Low-Noise, Rail-to-Rail I/O 1.8-V Operational Amplifier - OPA2313


The OPA313 family of single-, dual-, and quad-channel op amps represents a new generation of low-cost, general purpose, micro-power operational amplifiers. Featuring rail-to-rail input and very low noise (25 nV/√Hz at 1 kHz) makes this family very attractive for a variety of battery-powered applications that require a good balance between cost and performance. The low input bias current supports those op amps to be used in applications with megaohm source impedances.

The robust design of the OPA313 devices provides ease-of-use to the circuit designer: unity-gain stability with capacitive loads of up to 150 pF, integrated RF/EMI rejection filter, no phase reversal in overdrive conditions, and high electrostatic discharge (ESD) protection (4-kV HBM).

These devices are optimized for operation at voltages as low as +1.8 V (±0.9 V) and up to +5.5 V (±2.75 V), and are specified over the extended temperature range of –40°C to +125°C.

The OPA313 (single) is available in both SC70-5 and SOT23-5 packages. The OPA2313 (dual) is offered in SO-8, MSOP-8, and DFN-8 packages. The quad-channel OPA4313 is offered in a TSSOP-14 package.


  • Low IQ: 50 µA/ch
  • Wide Supply Range: 1.8 V to 5.5 V
  • Low Noise: 25 nV/√Hz at 1 kHz
  • Gain Bandwidth: 1 MHz
  • Low Input Bias Current: 0.2 pA
  • Low Offset Voltage: 0.5 mV
  • Unity-Gain Stable
  • Internal RF/EMI Filter
  • Extended Temperature Range:
    –40°C to +125°C

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Parametrics Compare all products in General-Purpose Op Amps

Number of Channels (#)
Total Supply Voltage (Min) (+5V=5, +/-5V=10)
Total Supply Voltage (Max) (+5V=5, +/-5V=10)
GBW (Typ) (MHz)
Slew Rate (Typ) (V/us)
Vos (Offset Voltage @ 25C) (Max) (mV)
Iq per channel (Typ) (mA)
Vn at 1kHz (Typ) (nV/rtHz)
Operating Temperature Range (C)
Package Group
Package Size: mm2:W x L (PKG)
Offset Drift (Typ) (uV/C)
Input Bias Current (Max) (pA)
CMRR (Typ) (dB)
Output Current (Typ) (mA)
OPA2313 OPA313 OPA4313
2     1     4    
1.8     1.8     1.8    
5.5     5.5     5.5    
1     1     1    
0.5     0.5     0.5    
2.5     2.5     2.5    
0.05     0.05     0.05    
25     25     25    
Catalog     Catalog     Catalog    
-40 to 125     -40 to 125     -40 to 125    
8SOIC: 29 mm2: 6 x 4.9(SOIC)
See datasheet (SON)
8VSSOP: 15 mm2: 4.9 x 3(VSSOP)    
5SC70: 4 mm2: 2.1 x 2(SC70)
5SOT-23: 8 mm2: 2.8 x 2.9(SOT-23)    
14TSSOP: 32 mm2: 6.4 x 5(TSSOP)    
2     2     2    
EMI Hardened
Small Size    
Small Size
EMI Hardened    
EMI Hardened    
10     10     10    
80     80     80    
15     15     15    
CMOS     CMOS     CMOS    

WEBENCH® Designer OPA2313

Amplifier Topology
Desired Power Supply Voltage
Positive Supply (Vcc):  V
Negative Supply (Vee):  V
Allowed Power Supply(Vcc-Vee) = 1.8 to 5.5 V
Desired Input and Output Requirements
  Min Max
Vin  V  V
Vout  V  V
Minimum Temperature = -40.0 °C
Maximum Temperature = 125.0 °C